content: /*
   * 支付宝开放平台API
   * 支付宝开放平台v3协议文档
   *
   * The version of the OpenAPI document: 2025-08-26
   * 
   *
   * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
   * https://openapi-generator.tech
   * Do not edit the class manually.
   */
  
  
  package com.alipay.v3;
  
  import okhttp3.MediaType;
  import okhttp3.RequestBody;
  
  import java.io.IOException;
  
  import okio.Buffer;
  import okio.BufferedSink;
  import okio.ForwardingSink;
  import okio.Okio;
  import okio.Sink;
  
  public class ProgressRequestBody extends RequestBody {
  
      private final RequestBody requestBody;
  
      private final ApiCallback callback;
  
      public ProgressRequestBody(RequestBody requestBody, ApiCallback callback) {
          this.requestBody = requestBody;
          this.callback = callback;
      }
  
      @Override
      public MediaType contentType() {
          return requestBody.contentType();
      }
  
      @Override
      public long contentLength() throws IOException {
          return requestBody.contentLength();
      }
  
      @Override
      public void writeTo(BufferedSink sink) throws IOException {
          BufferedSink bufferedSink = Okio.buffer(sink(sink));
          requestBody.writeTo(bufferedSink);
          bufferedSink.flush();
      }
  
      private Sink sink(Sink sink) {
          return new ForwardingSink(sink) {
  
              long bytesWritten = 0L;
              long contentLength = 0L;
  
              @Override
              public void write(Buffer source, long byteCount) throws IOException {
                  super.write(source, byteCount);
                  if (contentLength == 0) {
                      contentLength = contentLength();
                  }
  
                  bytesWritten += byteCount;
                  callback.onUploadProgress(bytesWritten, contentLength, bytesWritten == contentLength);
              }
          };
      }
  }
  